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VDH-CK800 Hardware Manual
3.
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Installation Illustration
Video input
Input interface is BVC type; input signal is PAL/NTSC BNC（1.0VP-P，75Ω）.
The Video signal should comply with national standards, a higher signal to
noise ratio, low distortion, low-interference; clear images, no deformation,
nature color and appropriate brightness.

Make sure stable and reliable signals from cameras
Cameras should be installed in a suitable position to avoid backlighting,
low-light environment, or adopts the better BLC, low-light cameras.
Cameras and digital video recorders should be common ground, stably and
reliably, in order to ensure the normal operation of the cameras.

Make sure the transmission cables are stable and reliable
Adopt high-quality, well-shielded coaxial cables, and choose the right model
based on the transmission distance. If the distance is too far, use video
compensation equipment to ensure signal quality based on the specific
circumstances.
Video cable should avoid strong electromagnetic interference with other
devices and circuits, in particular, should avoid the current of high voltage.
Cables and shielded cable should be well-connected firmly to avoid false,
joint welding or oxidation.
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Connections for video outputs
The video outputs include PAL/NTSC BNC(1.0VP-P，75Ω), VGA and HDMI
interfaces.
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